Particular resonator cavity (e.g., scanning, confocal or folded mirrors, etc.):
(under subclass 333) Subject matter wherein the optical beam goes back and forth within an optical cavity without any standing waves, similar to an oscillating cavity, but resulting in the amplification of the light input beam.
(1) Note. This can be a mode-selecting high gain optical structure in which the laser action takes place by the build-up of electromagnetic field intensity upon multiple
reflections.
SEE OR SEARCH CLASS
372, Coherent Light Generators,
92+, for laser particular resonant cavities which are not used for amplification of a light beam input.
